Every time somebody bumps up the number of megapixels, there's always another set of blog posts about how useless the megapixel race is. But I don't think they get it right all the time...

This came up the other day on the photo discussion list at work, where one of the guys pointed out one of the many millions of flame wars on the subject and stated that there had to be one correct answer to the question of how the 1 over focal length rule (meaning if you have a 50mm lens, you need to have your shutter at least at 1/50) applies to digital SLRs with crop-factor.

There are a lot of half-truths going around about photography. Generally, the various photographic equipment companies spread one or two of them, and then the various photography magazines and megasites play along because they realize that to go against what the photography companies want is a great way to not get access to the latest and greatest for review.

Why do photographers obsess so much about sharpness? Why are there millions of threads online about which lens is sharper than the other?